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8th grade physical Science Review

Total questions: 80

Worksheet time: 2hrs 9mins

Name
Class
Date
1.
The positively charged particles of an atom are the ________.
a)
electrons
b)
protons
c)
neutrons
d)
protons & neutrons
2.
What does the nucleus of an atom contain?
a)
Electrons and neutrons
b)
Protons and neutrons
c)
Neutrinos and positrons
d)
DNA and RN
3.

The subatomic particles that make up an atom.

a)

solid, liquid, gas

b)

electrons, protons, nucleus

c)

energy, protons, nucleus

d)

electrons, protons, neutrons

4.

__________ are negatively charged particles that are in the orbitals around the nucleus.

a)

protons

b)

nucleus

c)

neutrons

d)

electrons

5.

A neutron has _________ charge or is ________.

a)

negative ... neutral

b)

positive .... neutral

c)

no .... negative

d)

no ... neutral

6.
Which is an electron?
a)
A
b)
B
c)
C
7.

The smallest part of any element. Made up of protons, neutrons and electrons.

a)

Atom

b)

AMU

c)

Ion

d)

Isotope

8.

What is the atomic mass of Neon?

a)

10

b)

20

c)

30

9.
What does the C represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
10.

What does the 6 represent?

a)

Atomic mass

b)

atomic number

c)

chemical symbol

d)

element name

11.

How many electrons does this atom have?

a)

2

b)

4

c)

6

d)

10

12.
Elements which are shiny, conduct electricity and heat are called
a)
metal
b)
nonmetal
c)
metalloid
d)
nonexistent
13.
The atomic number tells you what?
a)
number of electrons
b)
number of protons
c)
number of neutrons
d)
both electrons and protons in an atom.
14.
Atoms with similar properties are most likely located...
a)
in the same period.
b)
in the same group.
c)
in different periods.
d)
to the right and left of each other.
15.
What is the element symbol for boron? 
a)
B
b)
Bo
c)
Bn
d)
W
16.
Which is a proton?
a)
A
b)
B
c)
C
17.
Which is a neutron?
a)
A
b)
B
c)
C
18.
a)

Metal

b)

Nonmetal

c)

Metalloid

19.
a)

Metal

b)

Nonmetal

c)

Metalloid

20.
a)

Metal

b)

Nonmetal

c)

Metalloid

21.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-14
d)
1-20
22.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
23.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
24.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
25.
A solution with a pH of 3.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
26.
A solution with a pH of 8.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
27.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
28.
Bleach is a strong base, what is the pH level of bleach?
a)
13
b)
14
c)
1
d)
2
29.
Flammability (burns): Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
30.
Blue Color: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
31.
Density: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
32.
Solubility (dissolves): Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
33.
Reacts with Acid: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
34.
Melting Point: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
35.
Reacts with Water: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
36.

Select the correct definition for MASS

a)

A measure of the amount of matter in an object

b)

A measure of the amount of space an object takes up

c)

A property that describes the compactness of molecules in a substance

37.

Which phase in the image is the LEAST DENSE?

a)

Solid

b)

Liquid

c)

Gas

38.

Which material is MOST dense?

a)

A

b)

B

c)

C

39.
Which liquid is the least dense?
a)
oil
b)
water
c)
syrup 
d)
plastic bottle
40.
Which liquid is the most dense?  
a)
oil
b)
water
c)
syrup
d)
plastic bottle
41.
What is the volume of Object X?
a)
10.0 cm3
b)
15.0 cm3
c)
20.0 cm3
d)
25.0 cm3
42.
What is the density of an object with a mass of 60 g and a volume of 2 cm3?
a)
30 g/cm3
b)
62 g/cm3
c)
120 g/cm3
d)
0.033 g/cm3
43.

What do all waves transfer?

a)

Matter

b)

Heat

c)

Electricity

d)

Energy

44.

What are the two types of waves?

a)

longitudinal and transverse

b)

sound and light

45.

Which type of waves have the longest wavelength?

a)

Visible light

b)

Radio waves

c)

X-rays

d)

Gamma-Rays

46.
What property of this wave is represented by the letter "A"
a)
amplitude
b)
crest
c)
trough
d)
wavelength
47.
What property of the wave is represented by the letter "B"?
a)
amplitude
b)
crest
c)
trough
d)
wavelength
48.
The highest point on a wave is:
a)
the crest
b)
the trough
c)
the top
d)
the coast 
49.
The lowest point on a wave is the:
a)
Amplitude
b)
Crest
c)
Trough
d)
Wavelength
50.
The type of waves that require medium to pass:
a)
Mechanical Waves
b)
Electromagnetic Waves
51.
How will this object move? 
a)
It won't move. 
b)
It will move to the right. 
c)
It will move to the left. 
d)
It will move up. 
52.
What is the net force?
a)
30 N left
b)
25 N right
c)
5 N left
d)
55 N right
53.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
54.
What is the net force?
a)
10 N
b)
0 N
c)
25 N
d)
1 N
55.
The force that pulls things toward earth.
a)
Speed
b)
Gravity
56.
Energy of motion is which type of energy?
a)
Potential
b)
Kinetic
c)
Sound
d)
Gravitational
57.
What kind of energy does this device use?
a)
Chemical
b)
Electrical
c)
Thermal
d)
Chemical
58.
What kind of energy is represented in this picture?
a)
Thermal
b)
Potential
c)
Nuclear
d)
Mechanical
59.
What kind of energy is represented in the picture?
a)
Thermal
b)
Chemical
c)
Sound
d)
Nuclear
60.
A battery converts what type of energy to another?
a)
sound to kinetic
b)
light to heat
c)
mechanical to electrical
d)
chemical to electrical
61.
Wind turbines and windmills convert what energy to another?
a)
Kinetic to electric
b)
Gravitational potential to electric
c)
Mechanical to potential
d)
Thermal to sound
62.

Hot water rises and cold water sinks. Is this:

a)

Convection

b)

Conduction

c)

Radiation

63.

Stir frying vegetables is an example of

a)

Convection

b)

Conduction

c)

Radiation

64.

A spoon in a cup of hot soup becomes warmer

a)

Convection

b)

Conduction

c)

Radiation

65.

You feel the heat from a campfire

a)

Convection

b)

Conduction

c)

Radiation

66.

A raw egg begins to fry as it hits a heated frying pan

a)

Convection

b)

Conduction

c)

Radiation

67.

A push or a pull on an object is called:

a)

Mass

b)

Matter

c)

Force

d)

Speed

68.

A force that one surface exerts on another when the two surfaces rub against each other and causes objects to slow down or stop.

a)

Mass

b)

Motion

c)

Inertia

d)

Friction

69.

The force that pulls objects toward each other is:

a)

Friction

b)

Gravity

c)

Balanced

d)

Equal

70.

Speed in any given direction is:

a)

Acceleration

b)

Mass

c)

Velocity

d)

Altitude

71.

Equal forces acting on an object in opposite directions; object will not move:

a)

Unbalanced Force

b)

Friction

c)

Gravity

d)

Balanced Force

72.

Forces that produce a nonzero net force, which changes an object's motion:

a)

Unbalanced Force

b)

Balanced Force

c)

Equal Force

d)

Nonzero Force

73.

The tendency of an object to resist any change in its motion is:

a)

Friction

b)

Gravity

c)

Inertia

d)

Balanced Force

74.

A tree performing photosynthesis

a)

Mechanical Energy

b)

Chemical Energy

c)

Sound Energy

d)

Elastic Energy

75.

The sum of potential and kinetic energy

a)

Mechanical Energy

b)

Elastic Energy

c)

Thermal Energy

d)

Electrical Energy

76.

Movement of electrons to transmit electricity

a)

Thermal Energy

b)

Electrical Energy

c)

Chemical Energy

d)

Elastic Energy

77.

We receive ________ and heat energy from the Sun.

a)

sound

b)

mechanical

c)

light

d)

kinetic

78.

A car at the top of the drop on a roller coaster has ________ energy.

a)

potential

b)

kinetic

c)

heat

d)

sound

79.

A car rolling down the drop of a roller coaster has ________ energy.

a)

potential

b)

kinetic

c)

light

d)

sound

80.

_______ energy is stored energy.

a)

Potential

b)

Kinetic

c)

Light

d)

Sound

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